Petrology

High school (ages 12+)
Environment & Earth

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/petrology

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How big is Petrology?Mineralogy, chemical composition, texture, structure, and genesis of rocks
2. What is the discipline?Petrology, a sub-discipline of geology
3. What is the key methodologies?Microscopy (petrography), chemical analysis, experimental petrology, thermodynamic modeling, phase diagrams
4. What is petrology and why do scientists study rocks?Petrology is the study of rocks, looking at their minerals, chemistry, and texture to learn how they formed and what they reveal about Earth’s history.
5. How do petrologists learn about the inside of the Earth?They use microscopes, special machines that mimic high pressure and heat, and tools like mass spectrometry to see tiny details and simulate conditions deep inside the planet.

Petrography: The detailed description of rocks, especially using microscopic examination of thin sections.
Phase Diagrams: Graphical representations showing the stable phases of a substance under varying conditions of temperature and pressure.
Lithification: The process by which sediments are compacted and cemented to form sedimentary rock.